55055042240 has 56 divisors (see below), whose sum is σ = 143017993872. Its totient is φ = 20020014080.

The previous prime is 55055042239. The next prime is 55055042267. The reversal of 55055042240 is 4224055055.

It is a Harshad number since it is a multiple of its sum of digits (32).

It is a junction number, because it is equal to n+sod(n) for n = 55055042197 and 55055042206.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7816799 + ... + 7823838.

Almost surely, 2^55055042240 is an apocalyptic number.

It is an amenable number.

55055042240 is an abundant number, since it is smaller than the sum of its proper divisors (87962951632).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

55055042240 is a wasteful number, since it uses less digits than its factorization.

55055042240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15640665 (or 15640655 counting only the distinct ones).

The product of its (nonzero) digits is 40000, while the sum is 32.

Adding to 55055042240 its reverse (4224055055), we get a palindrome (59279097295).

The spelling of 55055042240 in words is "fifty-five billion, fifty-five million, forty-two thousand, two hundred forty".